668316030 has 64 divisors (see below), whose sum is σ = 1649064960. Its totient is φ = 173257344.

The previous prime is 668316023. The next prime is 668316043. The reversal of 668316030 is 30613866.

It is a junction number, because it is equal to n+sod(n) for n = 668315982 and 668316000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219861 + ... + 222879.

It is an arithmetic number, because the mean of its divisors is an integer number (25766640).

Almost surely, 2^668316030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 668316030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (824532480).

668316030 is an abundant number, since it is smaller than the sum of its proper divisors (980748930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

668316030 is a wasteful number, since it uses less digits than its factorization.

668316030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 668316030 is about 25851.8090276097. The cubic root of 668316030 is about 874.3002972232.

Adding to 668316030 its reverse (30613866), we get a palindrome (698929896).

The spelling of 668316030 in words is "six hundred sixty-eight million, three hundred sixteen thousand, thirty".